Question
(49)15 – 1 is exactly divisible by :
Answer: Option D
Answer: (d)
As we know, xn – an is exactly divisible by (x – a) if n is odd.
∴ (49)15 – (1 )15 is exactly divisible by 49 – 1 = 48, that is a multiple of 8.
Hence required answer is 8.
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Answer: (d)
As we know, xn – an is exactly divisible by (x – a) if n is odd.
∴ (49)15 – (1 )15 is exactly divisible by 49 – 1 = 48, that is a multiple of 8.
Hence required answer is 8.
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